Entry updated 28 November 2022. Tagged: Author, Community.
(1571-1630) German astronomer, one-time assistant to Tycho Brahe (1546-1601) and later imperial mathematician and astrologer to the Holy Roman Emperor Rudolph II. Kepler's contribution to Astronomy – most notably his three laws of planetary motion – provided vital groundwork for Newton's cosmological synthesis. In 1593 he prepared a dissertation on the heliocentric theory, which explained how events in the heavens would be seen by an observer stationed on the Moon; a new draft, in which the observer is conveniently placed on the Moon by a demon conjured up by his mother, was prepared in 1609 (the manuscript was stolen in 1611 and Kepler later had to defend his own mother against an accusation of witchcraft, a charge which may have been encouraged by the literary device). Between 1620 and 1630 he annotated the essay extensively, but he died while it was being prepared for publication; it finally appeared as Somnium ["The Dream"; for full title see Checklist] (1634 in Latin; definitive trans Edward Rosen as Kepler's "Somnium" 1967; a cut trans by E F Bleiler had earlier appeared in Beyond Time and Space, anth 1950 ed August W Derleth). The last section constructs a hypothetical Ecology for the Moon, a significant pioneering Proto SF exercise in the imagination of Life on Other Worlds. [BS]
born Weil der Stadt, Free Imperial City [now in Germany]: 27 December 1571
died Regensburg, Bavaria [now in Germany]: 15 November 1630
- Joh. Keppleri Mathematici olim imperatorii Somnium, seu opus posthumum de astronomia lunari (Frankfurt, Germany: Sagani Silesiorum, 1634) [binding unknown/]
- Kepler's Somnium: The Dream, or Posthumous Work on Lunar Astronomy (Madison, Wisconsin: University of Wisconsin Press, 1967) [definitive trans by Edward Rosen of the above: hb/]
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